Im asked to shoot a musical tomorrow, and as I dont really know where I have to stand during the musical, I dont too know which lenses to bring.
I think I have to stand in the front, so the 50 1,7 could be too long, and since it doesnt feauture AF and isnt sharp until you stop the lens down at f/4, I think Id be better of with the kitlens. Right?
And the 70-200 f/4, should I bring that one with me? It's a bit too slow I think, and maybe even too long also even if I have to stand in the back of the room.
Im going to bring my superzoom with me, but do you have other suggestions? 28 3,5 (which doenst have AF too)?

Why not at least try to bring the 50mm, it never hurts to have a fast lens on you, even if it is MF. A couple of days ago I brought my 50mm F2.0 MF lens to the local museum and I still got some pretty decent shots.

Yeah, but I still dont have the big viewfinder of the 50D... and focusing with the 50 @ 1,7 or 2,8 on such a small v/f with moving people is quite hard. BUT at least I can try it, it's a real small lens.

Congrats on finally getting the 70-200! (You should bring it if only because you agonized over it for months and now finally have it.) I obviously don't know the size of the room, but I would expect that it should still give you enough flexibility. It's good for portraiture, so you will probably get some nice head shots of the actors. Even if you have to boost the iso to get the shots, I think that is worthwhile.

I honestly would not go for a manual focus lens in this case since your subjects are going to be moving around on stage. If you were going to use the MF lens for the curtain call when you can predict where they will stand, it might work, but again, so would your AF lenses, which will be a lot easier. Now saying that, I have had to override my AF and just manually focus in darker rooms because the camera just couldn't figure out what I was trying to focus on.

Thanks. I guess youre quite right about the AF. But, I think that the room's too small for a tele. Maybe even the 50mm could be too long also.
I think that, instead of a tele, I bring my Sigma 35-70 2,8-4 with me. Okay, it is MF, but it at least gives me some flexibilities, and it's fast too with f/2,8.

Ai forgotten to say!
Well, I did it all with the kitlens as there was enough light and I really needed the AF. I stood/sat almost on the stage, so a tele shouldnt have helped.
After all Im quite happy how it went